I would love to do this on my personal blog, but how? I'm just a guy with a niche Wordpress blog who doesn't have the time to negotiate and search for ad deals.

I would love to do this on my personal blog, but how? I'm just a guy with a niche Wordpress blog who doesn't have the time to negotiate and search for ad deals. What I really want is a service that can match me with advertising firms based on the content of my site, and do the negotiations for me. And give me a means with which to contest ads if I find they're not appropriate, or the matching itself if I discover my matched company is doing something immoral. There are a few minor, but significant differences between this and programmatic ads. Do those differences make it good, or at least neutral? Does such a company exist?